Okay - I gotta know where I stand with this stuff. After playing for free for many years, I started about a year ago doing the mercenary thing. At times I get overloaded with new material, and wind up screwing up a bit on gigs (I'm learning what my limits are). I never really train wreck, and I think I usually cover pretty well. On a bad gig I'd say I average around 3 or 4 minor mistakes that I feel only the band would notice. I've been told by 2 bands now that they expect me not to make any mistakes. They claim that there are session guys they can hire that just flat out don't make mistakes. Is this true? How do you feel about mistakes?